BD8919FV - Rohm

BD8919FV IC Care Interface

Pin No. Pin Name 1 2 3 XTAL1 XTAL2 VDD I/O I O S Signal Level VDD VDD VDD Pin Function Crystal connection or input for external clock Technical Note www.DataSheet4U.com Crystal connection (leave open pin when external clock source is used) 3.3 V power source pin for host interface. Connect 0.1µF capacitor between the VDD and GND pins. Input for clock frequ.

Features

1) 1 half duplex bidirectional buffers 2) Protection against short-circuit for all the card contact pins 3) 5V power source for the card (VCC) 4) Over-current protection for card power source 5) Built-in thermal shutdown circuit 6) Built-in supply voltage detector 7) Automatic activation/deactivation sequence function for card contact pin Activation sequence: driven by a signal from controller (CMDVCCB) Deactivation sequence: driven by a signal from controller (CMDVCCB) and fault detection (card removal, short circuit of card power, IC overheat detection, VDD or VDDP drop) 8) Card contact pi.